2.9. Undo and Redo functions
You can easily reverse your last actions in PDF file within PDF Expert app.
To undo a change please tap
button on the bottom of annotation toolbar. In order to undo the several actions, tap and hold
button to reveal the additional control panel. Tap the dots to undo up to ten last changes.
The same way you can redo your actions. Reveal the panel and restore your last actions by tapping the dots.